Home / 290,400,277.80-435,600,416.70-263,526,421.80

Finding the Fourth Proportional to 290,400,277.80, 435,600,416.70 and 263,526,421.80

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Solution

The fourth proportional to 290,400,277.80, 435,600,416.70 and 263,526,421.80 is: 395,289,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,400,277.80 : 435,600,416.70 = 263,526,421.80 : x
  2. Step 2: Convert to fraction form
    290,400,277.80/435,600,416.70 = 263,526,421.80/x
  3. Step 3: Cross multiply
    290,400,277.80x = 435,600,416.70 × 263,526,421.80
  4. Step 4: Simplify right side
    290,400,277.80x = 114,792,219,147,539,968
  5. Step 5: Solve for x
    x = 114,792,219,147,539,968/290,400,277.80
  6. Step 6: Final answer
    x = 395,289,632.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.